One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8,6,9,4,13)(3,10,11,15,12,7,14,16)(17,18)(19,28)(20,25)(21,26)(22,31)(23,27)(24,29)(30,32)(1,3,6,12)(2,7,9,10)(4,11,5,14)(8,15,13,16)(17,19,23,20)(18,24,27,32)(21,29,22,30)(25,31,28,26)(17,20,23,19)(18,25,27,28)(21,29,22,30)(24,31,32,26)(17,21,23,22)(18,26,27,31)(19,29,20,30)(24,25,32,28)(1,4,6,5)(2,8,9,13)(3,11,12,14)(7,15,10,16)(18,27)(24,32)(25,28)(26,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.